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136 | /*
Copyright (C) 2019 Andreas Franz Borchert
Michael Christian Lehn
----------------------------------------------------------------------------
The Astl Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either version
2 of the License, or (at your option) any later version.
The Astl Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cassert>
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <memory>
#include <astl/builtin-parse.hpp>
#include <astl/generator.hpp>
#include <astl/loader.hpp>
#include <astl/run.hpp>
#include "location.hpp"
#include "operators.hpp"
#include "parser.hpp"
#include "scanner.hpp"
#include "yytname.hpp"
using namespace Astl;
using namespace AstlULMcalc;
AttributePtr builtin_parse(BindingsPtr bindings, AttributePtr args) {
return builtin_parse(bindings, args,
[](NodePtr& root, InputStreamPtr istream) -> bool {
Scanner scanner(istream->get(), istream->get_name());
parser p(scanner, root);
return p.parse() == 0;
});
}
int main(int argc, char** argv) {
try {
Loader loader;
char* path = getenv("ASTL_ULMCALC_PATH");
if (path) {
char* dir = path;
for (char* cp = path; *cp; ++cp) {
if (*cp == ':') {
if (dir) {
* cp = 0;
loader.add_library(dir);
dir = 0;
}
} else if (!dir) {
dir = cp;
}
}
if (dir) loader.add_library(dir);
} else {
// default path
#ifdef ASTL_ULMCALC_LIBDIR
loader.add_library(ASTL_ULMCALC_LIBDIR);
#else
loader.add_library("/usr/local/share/astl/ulmcalc");
loader.add_library("/usr/share/astl/ulmcalc");
#endif
}
BuiltinFunctions bfs;
bfs.add("parse", builtin_parse);
bfs.add("run_attribution_rules", builtin_run_attribution_rules);
bfs.add("run_state_machines", builtin_run_state_machines);
auto bindings = std::make_shared<Bindings>();
bfs.insert(bindings);
run(argc, argv, loader, Op::LPAREN, bindings);
} catch (Exception& e) {
std::cerr << e.what() << std::endl;
std::exit(1);
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
std::exit(1);
}
}
/*
=head1 NAME
astl-ulmcalc-free -- run free-standing Astl scripts for assembler texts for ULMcalc
=head1 SYNOPSIS
B<astl-ulmcalc-free> F<astl-script> [I<args>]
=head1 DESCRIPTION
Astl scripts can be started explicitly using the B<astl-ulmcalc-free> interpreter
or implicitly using a shebang line in the first line of the script:
#!/usr/bin/env astl-ulmcalc-free
The construct using F</usr/bin/env> attempts to find F<astl-ulmcalc-free>
anywhere in the user's path.
The text shall be for the ULM Calculator
B<astl-ulmcalc-free> does not load or parse itself an assembler source
file. Instead, I<root> is set to null and it is up to the I<main>
function of the script to load and parse source files.
=head1 ENVIRONMENT
The environment variable I<ASTL_ULMCALC_PATH> can be used to specify
a colon-separated list of directories where library modules
are looked for. By default, F</usr/local/share/astl/ulmcalc> and
F</usr/share/astl/ulmcalc> are used. The script itself can add more
directories to the library search path using the Astl
library clause (see section 12.1 in the I<Report of the
Astl Programming Language>).
=head1 AUTHOR
Andreas F. Borchert
=cut
*/
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